<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script src="../vue.js"></script>
  </head>

  <body>
    <div id="app">
      <h1>{{msg}}</h1>
      <!-- 
        遍历字符串
        item 每个字符串 index下标
       -->
      <p v-for="(item,index) of msg">{{item}},{{index}}</p>
      <!-- 
        遍历对象
        键值对 key=index value=item
       -->
      <p v-for="(item,index) in obj">{{item}},{{index}}</p>
      <!-- 
        遍历数字
        item 每个数字 index下标
       -->
      <p v-for="(item,index) in num">{{item}},{{index}}</p>
    </div>
    <script>
      Vue.config.productionTip = false;
      const vm = new Vue({
        el: "#app",
        data() {
          return {
            msg: "hello vue!",
            obj: {
              name: "黑大帅",
              NB: "真牛逼",
            },
            num: 312,
          };
        },
        methods: {},
      });
    </script>
  </body>
</html>
